Thick anodized plate.
An example of the element Niobium

Thick anodized plate.
This lovely thick plate of niobium was anodized using a battery charger by Juan and friends in their car shop. You can see many other examples of anodized niobium on my site, but this is by far the largest!Source:Juan JimenezContributor:Juan JimenezAcquired:6 April, 2007Text Updated:6 April, 2007Price: DonatedSize: 5"Purity: 99.95%